package com.weiyi.context;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebInitParam;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(
		urlPatterns = {"/avatar.view"},
		initParams = {
				@WebInitParam(name="AVATAR_DIR",value="/avatars"),
		}
	)
public class Avatar extends HttpServlet{
	private String AVATAR_DIR;
	@Override
	public void init() throws ServletException {
		AVATAR_DIR = getInitParameter("AVATAR_DIR");		
	}
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("text/html;charset=UTF-8");
		PrintWriter out = resp.getWriter();
		out.println("<html>");
		out.println("<head>");
		out.println("<title>头像显示</title>");
		out.println("</head>");
		out.println("<body>");
		for(String avatar:getServletContext().getResourcePaths(AVATAR_DIR) ){
			avatar = avatar.replaceFirst("/", "");
			out.println("<img src='"+ avatar+"'/>");
		}
		out.println("</body>");
		out.println("</html>");
		out.close();
	}
}
